You’ve got to have a pretty thick skin to be on a mailing list - sometimes people post several messages in a row that may be over your head, in regards to people or events you have no knowledge of, or just plain boring. In these cases it is best to just buddha-up - find your delete key and go with the flow. If you really can’t see why the members of this particular list might be interested this particular “celebrity’s” correspondence in this matter — if you truly have “no idea what it is about” — then perhaps you should save your comments until you do have some inkling of what’s going around you. Then you won’t appear petulant or uninformed when you wish to participate rationally at a later time.
Good luck!